Combined supporting frame connecting structure

Abstract

The utility model discloses a combined supporting frame connecting structure which comprises a vertical rod, a transverse rod, a pin head and a fixing fastener, and a plurality of grooves extending in the axial direction of the vertical rod are formed in the surface of the vertical rod. A bulge matched with the groove is arranged on the inner side of the fixing fastener so as to limit the movement of the fixing fastener along the circumferential direction of the vertical rod; a fixed connecting area is formed between the fixing fastener and the groove, the pin head comprises a connecting part matched with the cross rod and an inserting part matched with the groove, and the inserting part extends into the fixed connecting area so that the cross rod can be connected to the vertical rod. According to the connecting structure of the combined supporting frame, the groove in the surface of the vertical rod is matched with the protrusion on the fixing fastener, the effect of limiting the circumferential movement of the fixing fastener along the vertical rod can be achieved, the situation that the position of the fixing fastener deflects due to vibration in the using process of the combined supporting frame is avoided, and the stability of the connecting structure of the combined supporting frame is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of scaffold, concretely relates to a combined support frame connecting structure. BACKGROUND

[0002] In the field of construction engineering, the combined support frame is an indispensable part in construction, which is formed by the mutual connection of horizontal rods and vertical rods to provide a safe and stable working platform for construction personnel.

[0003] The connecting structure is an important component of the support frame such as scaffold, which uses a specific connecting method and structure to combine multiple support components into a whole to provide stable support. Although the traditional non-pin socket connection is fast in construction, it has poor overall stability. To solve the technical problem of easy loosening of the support frame connection, the combined support frame connecting structure disclosed in Chinese patent CN202020932296.1 connects the socket head at both ends of the horizontal rod, and the top end of the socket head is provided with a socket, and the socket head is internally slidably installed with a pin, so that the vertical rod and the horizontal rod are fixed together. However, the connecting method used in this patent has problems such as many components, complex component structure, and complicated installation steps, and at the same time, since it mainly focuses on improving the stability of the support frame in the vertical direction, it ignores the problem of horizontal twisting, which further affects the overall stability of the support frame.

[0004] Therefore, it is necessary to uniquely design the connecting structure to meet the requirements of lateral stability of the support frame and to improve the overall safety. INVENTION CONTENTS

[0005] The utility model provides a kind of combined support frame connecting structure to solve at least one of the above technical problems.

[0006] The technical scheme adopted by the utility model is as follows: a combined support frame connecting structure, comprising a vertical rod, a horizontal rod, a pin head and a fixing fastener, the surface of the vertical rod is provided with a plurality of grooves extending along the axial direction of the vertical rod;The inside of the fixing fastener has a protrusion matched with the groove to limit the movement of the fixing fastener along the circumference of the vertical rod;The fixing fastener and the groove form a fixed connection area, the pin head includes a connecting part matched with the horizontal rod and a plug-in part matched with the groove, and the plug-in part extends into the fixed connection area to connect the horizontal rod on the vertical rod.

[0007] In a preferred embodiment, the number of grooves is four, and the four grooves are arranged in a circumferential array along the outer surface of the vertical rod.

[0008] In a preferred embodiment, the pin head further includes an extension part between the connecting part and the plug-in part, and a locking hole is formed on the extension part to connect a plurality of pin heads in series by a locking ring.

[0009] In a preferred embodiment, the locking ring is a metal cable tie.

[0010] In a preferred embodiment, the outer surface of the insertion portion is formed with a transverse groove, and the inner surface of the transverse groove is formed with a transverse protrusion matched with the transverse groove.

[0011] In a preferred embodiment, the end of the insertion portion is formed with a sharp head, and the circumference of the insertion portion is formed with a barb.

[0012] In a preferred embodiment, the outer surface of both ends of the crossbar is formed with an external thread, and the connecting portion is formed with an internal thread matched with the external thread.

[0013] In a preferred embodiment, the end of the crossbar is formed with a fastening hole extending radially along the crossbar, and the connecting portion is formed with a counter hole matched with the fastening hole, so as to connect the fastening hole and the counter hole through a fastening bolt.

[0014] In a preferred embodiment, the inner surface of the fixing buckle is formed with an anti-skid pattern.

[0015] Thanks to the above technical solutions, the utility model has the following beneficial effects:

[0016] 1. As a preferred embodiment of the utility model, the cooperation between the groove on the surface of the vertical rod and the protrusion on the fixing buckle can limit the movement of the fixing buckle along the circumference of the vertical rod, prevent the deflection of the position of the fixing buckle caused by vibration during the use of the combined support frame, and improve the stability of the connection structure of the combined support frame.

[0017] 2. As a preferred embodiment of the utility model, the fixing buckle and the groove on the surface of the vertical rod limit the fixed connection area for installing the pin head, so that the insertion portion of the pin head can be inserted into the fixed connection area, the combination of the vertical rod and the crossbar can be completed, and the installation is more convenient. During the use, on the one hand, when the crossbar is subjected to force, the insertion portion of the pin head will move towards the fixed connection area, thereby avoiding the disengagement of the insertion portion from the fixed connection area and increasing the stability of the connection between the crossbar and the vertical rod. On the other hand, the movement of the pin head along the circumference of the vertical rod is limited by the groove on the vertical rod, so that the stability of the vertical rod and the crossbar in the transverse direction can be increased.

[0018] 3. As a preferred embodiment of the utility model, the groove can increase the surface area of the vertical rod, and compared with the traditional round rod, the mechanical strength can be increased.

[0019] 4. As a preferred embodiment of the present utility model, the locking holes arranged on the pin head can cooperate with the locking ring, a plurality of pin heads are connected in series, and the stability of the connection between the horizontal rod and the vertical rod is further enhanced.

[0020] 5. As a preferred embodiment of the present utility model, the arrangement of the horizontal groove and the horizontal protrusion can increase the friction between the plug-in part and the groove, reduce the movement of the horizontal rod in the vertical direction caused by the stress on the horizontal rod, and enhance the stability of the connection between the horizontal rod and the vertical rod in the vertical direction. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings described herein are used to provide further understanding of the present utility model, constitute a part of the present utility model, and the illustrative embodiments of the present utility model and the description thereof are used to explain the present utility model and do not constitute improper limitation on the present utility model. In the drawings:

[0022] Figure 1 The figure is a schematic view of the cooperation structure of the pin head and the vertical rod of a preferred embodiment of the present utility model;

[0023] Figure 2 The figure is a schematic view of the cooperation structure of the pin head and the vertical rod of a preferred embodiment of the present utility model;

[0024] Figure 3 The figure is a schematic view of the cooperation structure of the pin head and the vertical rod of a preferred embodiment of the present utility model;

[0025] Figure 4 The figure is a schematic view of the cooperation structure of the pin head and the vertical rod of a preferred embodiment of the present utility model;

[0026] Figure 5 The figure is a schematic view of the cooperation structure of the pin head and the vertical rod of a preferred embodiment of the present utility model;

[0027] Figure 6 The figure is a schematic view of the cooperation structure of the pin head and the vertical rod of a preferred embodiment of the present utility model;

[0028] Figure 7 The figure is a schematic view of the cooperation structure of the pin head and the vertical rod of a preferred embodiment of the present utility model;

[0029] Figure 8 The figure is a schematic view of the cooperation structure of the pin head and the vertical rod of a preferred embodiment of the present utility model;

[0030] Reference signs

[0031] 1, vertical rod; 11, groove; 110, fixed connection area;

[0032] 2, horizontal rod; 20, external thread; 21, fastening hole;

[0033] 3, pin head; 31, connecting part; 310, internal thread; 311, butt joint hole; 312, fastening bolt; 32, insertion part; 321, pointed head; 322, barb; 33, extension part; 34, locking hole; 35, locking ring;

[0034] 4, fixing buckle; 41, protrusion. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0036] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0037] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation of the present application.

[0038] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0039] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. In the description of the present application, the description of the terms "embodiment", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] A preferred embodiment, as shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 A combined support frame connecting structure, comprising a vertical rod 1, a horizontal rod 2, a pin head 3 and a fixing buckle 4, the surface of the vertical rod 1 is provided with four grooves 11 extending along the axial direction of the vertical rod 1, and the four grooves 11 are arranged in a circumferential array along the outer surface of the vertical rod 1; the inner side of the fixing buckle 4 is provided with a protrusion 41 matched with the groove 11, so that the movement of the fixing buckle 4 along the circumferential direction of the vertical rod 1 can be limited by the cooperation of the groove 11 and the protrusion 41; the fixing buckle 4 and the groove 11 form a fixed connection area 110, the pin head 3 comprises a connecting part 31 matched with the horizontal rod 2 and a plug-in part 32 matched with the groove 11, and the plug-in part 32 extends into the fixed connection area 110 to connect the horizontal rod 2 to the vertical rod 1.

[0041] The combined support frame connecting structure in the present application can be used by first installing the vertical rod 1 on the ground, installing the pin head 3 on the horizontal rod 2, and then installing the fixing buckle 4 on the vertical rod 1. The fixing buckle 4 can be pre-tightened first, then the horizontal rod 2 is placed between the two vertical rods 1, the plug-in part 32 of the pin head 3 is placed in the groove 11 of the vertical rod 1, the plug-in part 32 of the pin head 3 is inserted into the fixed connection area 110 formed between the fixing buckle 4 and the groove 11 of the vertical rod 1 from top to bottom, and finally the fixing buckle 4 is completely tightened.

[0042] The present application can limit the movement of the fixing buckle 4 along the circumferential direction of the vertical rod 1 by using the cooperation of the groove 11 on the surface of the vertical rod 1 and the protrusion 41 on the fixing buckle 4, prevent the deflection of the position of the fixing buckle 4 caused by vibration during use of the combined support frame, and improve the stability of the combined support frame connecting structure.

[0043] The fixed fastener 4 and the groove 11 on the surface of the vertical rod 1 limit the fixed connection area 110 for installing the pin head 3, so that the insertion part 32 of the pin head 3 can be inserted into the fixed connection area 110, that is, the combination of the vertical rod 1 and the horizontal rod 2 can be completed, and the installation is more convenient. At the same time, in the process of use, on the one hand, when the horizontal rod 2 is subjected to force, the insertion part 32 of the pin head 3 will move in the direction of the fixed connection area 110, thereby avoiding the disengagement of the insertion part 32 from the fixed connection area 110, and increasing the stability of the connection between the horizontal rod 2 and the vertical rod 1. On the other hand, by using the limitation of the groove 11 on the vertical rod 1, the pin head 3 cannot move along the circumference of the vertical rod 1, thereby increasing the stability of the horizontal rod 2 and the vertical rod 1.

[0044] In addition, the setting of the groove 11 can increase the surface area of the vertical rod 1, and compared with the traditional round rod, greater mechanical strength can be obtained.

[0045] Further, as shown in Figure 5 The pin head 3 further includes an extension part 33 between the connecting part 31 and the insertion part 32, and the extension part 33 is formed with a locking hole 34, so as to connect a plurality of pin heads 3 in series through a locking ring 35, wherein the locking ring 35 can be a metal strap or directly a wire bundle, thereby further improving the stability of the connection structure of the combined support frame.

[0046] Further, the friction between the insertion part 32 and the groove 11 can be increased, thereby avoiding the downward movement of the horizontal rod 2 under force, and the way of increasing the friction can be that a cross groove 11 is etched on the outer surface of the insertion part 32, and a cross protrusion 41 matched with the cross groove 11 is etched on the inner surface of the groove 11.

[0047] In addition, in order to avoid the downward movement of the horizontal rod 2 under force, the friction between the fixed fastener 4 and the vertical rod 1 can also be increased, for example, anti-skid lines are formed on the inner surface of the fixed fastener 4, thereby increasing the friction between the fixed fastener 4 and the vertical rod 1.

[0048] Further, as shown in Figure 8 The end of the insertion part 32 is formed with a sharp head 321, and the shape of the sharp head 321 can be circular or circular truncated cone, thereby facilitating the insertion of the insertion part 32 into the fixed connection area 110. Further, in order to prevent the disengagement of the insertion part 32 from the fixed connection area 110, a barb 322 structure can be formed on the circumference of the insertion part 32.

[0049] A preferred embodiment, the connection mode of the horizontal rod 2 and the pin head 3 can adopt the following three modes:

[0050] Mode one

[0051] Directly welding the pin head 3 with the horizontal rod 2, or integrally forming the horizontal rod 2 and the pin head 3.

[0052] Mode two

[0053] The crossbar 2 and the pin head 3 are connected by screwing, and the outer surface of the two ends of the crossbar 2 is formed with external threads 20, and the connecting part 31 is formed with internal threads 310 engaging with the external threads 20. Figure 7

[0054] Mode three

[0055] The crossbar 2 and the pin head 3 are connected by inserting and locking with a fastening bolt 312, and the end of the crossbar 2 is formed with a fastening hole 21 extending along the radial direction of the crossbar 2, and the connecting part 31 is formed with a butt joint hole 311 cooperating with the fastening hole 21, so as to connect the fastening hole 21 and the butt joint hole 311 by the fastening bolt 312. Figure 6

[0056] In addition to the above three connection modes, other fixed connection modes can also be adopted.

[0057] The parts not described in the utility model can be realized by using or referring to the existing technology.

[0058] Each embodiment in the specification is described in a progressive manner, and the same and similar parts between each embodiment can be referred to each other, and each embodiment mainly describes the difference from other embodiments.

[0059] The above is only an embodiment of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the claim range of the utility model.​​

Claims

1. A combined support frame connection structure, comprising a vertical pole (1), a horizontal pole (2), a pin (3), and a fixing fastener (4), characterized in that, The surface of the upright (1) is provided with a plurality of grooves (11) extending along the axial direction of the upright (1); the inner side of the fixing fastener (4) has a protrusion (41) that cooperates with the groove (11) to restrict the movement of the fixing fastener (4) along the circumferential direction of the upright (1); a fixed connection area (110) is formed between the fixing fastener (4) and the groove (11); the pin (3) includes a connecting part (31) that cooperates with the crossbar (2) and a plug part (32) that cooperates with the groove (11); the plug part (32) extends into the fixed connection area (110) so that the crossbar (2) is connected to the upright (1).

2. The combined support frame connection structure according to claim 1, characterized in that, The number of grooves (11) is four, and the four grooves (11) are arranged in a circular array along the outer surface of the upright (1).

3. The combined support frame connection structure according to claim 2, characterized in that, The pin (3) also includes an extension (33) located between the connecting portion (31) and the insertion portion (32), and a locking hole (34) is formed on the extension (33) to connect multiple pins (3) in series by a locking ring (35).

4. The combined support frame connection structure according to claim 3, characterized in that, The locking ring (35) is a metal cable tie.

5. The combined support frame connection structure according to claim 1, characterized in that, The outer surface of the plug (32) is formed with a horizontal groove (11), and the inner surface of the groove (11) is formed with a horizontal protrusion (41) that cooperates with the horizontal groove (11).

6. The combined support frame connection structure according to claim 1, characterized in that, The end of the plug (32) is formed with a pointed tip (321), and the circumferential direction of the plug (32) is formed with barbs (322).

7. The combined support frame connection structure according to claim 1, characterized in that, The crossbar (2) has external threads (20) formed on the outer surfaces of both ends, and the connecting part (31) has internal threads (310) that mesh with the external threads (20).

8. The combined support frame connection structure according to claim 7, characterized in that, The end of the crossbar (2) is formed with a fastening hole (21) extending radially along the crossbar (2), and the connecting part (31) is formed with a mating hole (311) that mates with the fastening hole (21) so as to connect the fastening hole (21) and the mating hole (311) by fastening bolts (312).

9. The combined support frame connection structure according to claim 1, characterized in that, The inner surface of the fastener (4) has anti-slip texture.

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